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Predictions graded

Valentina Steiner #401Germany0Katie Swan #187United Kingdom2

Sets 1-6 · 0-6Thu 24 Sept 2026, 14:01 Predictions gradedSecond RoundHard

Predictions10–191%

Edges4–357%

Player Profiles

Ranking advantageKatie Swan · 214 places

Valentina Steiner

Germany

Steiner, 20, is right-handed. Her No. 401 singles ranking is a career high reached in September 2026.

Current ranking: #401
Peak ranking: #401
Current age: 20
Preferred surface: —
Hand: Right handed
Height: —

Katie Swan

United Kingdom

Swan, 27, is a right-hander who lists hard court as her favourite surface. She returned in 2025 after a long-term back-injury layoff and reached a career-high No. 118 in 2022.

Current ranking: #187
Peak ranking: #118 · 2022
Current age: 27
Preferred surface: Hard
Hand: Right handed
Height: 174 cm

Quick Take

Pre-match view

Context last updated 23 Sep 2026, 08:27 · Europe/Bucharest

Swan's ranking, seeded status and a 6-1 6-0 opening win against Steiner's three matches in three days is the tension here, and the ninth seed is the likelier winner.

Two quoted prices offer something: Steiner to win in three sets at 6.5 and the match to go to a deciding set at 2.6. Swan to win at 1.33 asks for more than the gap between them justifies.

Context

Swan, the ninth seed, dropped only one game in her first match since 11 September at the Evora W50. A short, dominant opener matters for this fixture because it leaves her with almost no time on court before a second round played two days later. The counterweight is on the other side of the net: Yamalapalli was a No. 349 lucky loser who had already lost in the final qualifying round, so the margin reflects the state of that opponent as much as Swan's own level.
- Swan is seeded ninth in Porto and lost one game in her first-round win over lucky loser Sahaja Yamalapalli of India.
- Yamalapalli had already played two qualifying matches in Porto, losing the final qualifying round to Naiktha Bains before entering the main draw as a lucky loser.
ConfirmedSources checked 23 Sep 2026, 08:25 · Europe/Bucharest
Swan has stayed in Portugal since the week of, moving from the Evora W50 to the WTA 125 event in Porto with no change of country or surface between the events. That continuity matters modestly for a first-round match at this level: no travel day, no adaptation to a different court speed, and practice on comparable hard courts between events. The limitation is that Evora and Porto are separate venues and separate weeks, so this is acclimatisation rather than anything closer to home conditions.
- Swan began the Evora W50 with a 6-0 6-2 win to reach the second round .
- Swan then beat Malaika Rapolu 6-4 3-6 6-1 to reach the Evora quarter-finals .
ConfirmedSources checked 23 Sep 2026, 08:25 · Europe/Bucharest
Steiner, 20 and ranked outside the top 400, needed three matches in three days in Porto to reach the second round, including a three-set win over Kylie Collins and a 6-2 7-5 first-round win over Caroline Werner. Swan played a single 6-1 6-0 match in the same window, so the time on court going into this match is heavily one-sided. There is one offset in Steiner's favour: her opening qualifying match was cut short when Gabriella Da Silva Fick retired with a right-arm problem, so that day cost her less than a full match. She therefore arrives with three straight wins on these courts but the heavier recent load.
- Steiner's opening match in Porto against Gabriella Da Silva Fick was interrupted when Da Silva Fick took a medical timeout for a right arm problem and later retired.
- Steiner played on 20, 21 and 22 September, including a three-set qualifying win over Kylie Collins and the straight-sets first-round win over Caroline Werner.
ConfirmedSources checked 23 Sep 2026, 08:25 · Europe/Bucharest
Steiner, ranked No. 399, came through qualifying and has spent far more time on court in Porto this week than her opponent.
Steiner's hard-court matches have run to 23.5 games on average, against 20 for Swan's five, and her sets this week were decided by two games in both wins. That suggests a match that can stay close on games even if Swan controls it, though two matches is a very small sample and Swan's own wins have often been one-sided.
- Steiner's two completed hard-court matches (21 and 22 September 2026) averaged 23.5 total games; one finished 2-0 and one 2-1.
- Her first sets in that sample were 2-0, averaging 6 games to 3; her second sets were 1-1, averaging 4 games to 5.5.
- Her game totals were 13-7 against Caroline Werner (No. 268) and 13-14 against Kylie Collins (No. 330).
- The sample covers only two completed matches.

BetBugs edges

Compare BetBugs' chances with the market's.

Positive edges · 2

Other edges · 5

The published chance does not exceed the market's implied chance.

Match WinnerwonUncertainty band: Strong lean

Katie Swan

1.33fair 1.39

BetBugs 72% · Market 75.2%

−3.2ppshort

Swan is the higher-ranked seed in clearly stronger hard-court form and arrives fresher, while Steiner has had a heavier three-day workload.

Set 1 WinnerwonUncertainty band: Strong lean

Katie Swan

1.40fair 1.41

BetBugs 71% · Market 71.4%

−0.4ppshort

Swan has started every hard-court match strongly and outranks Steiner, while Steiner's fast starts came against lower-ranked opponents.

Set 2 WinnerwonUncertainty band: Strong lean

Katie Swan

1.36fair 1.45

BetBugs 69% · Market 73.5%

−4.5ppshort

Swan owns the stronger second-set record and her most likely result, a straight-sets win, would also decide the second set in her favour.

Total GameswonUncertainty band: Slight lean

Under 21.5

1.65fair 1.89

BetBugs 53% · Market 60.6%

−7.6ppshort

Swan's dominant wins have mostly finished quickly, and her straight-sets results are the most common outcome in her recent hard-court sample.

BetBugs probabilities

How likely BetBugs thought each outcome was.

Result1 of 1 landed

Signal quality High · Uncertainty band Strong lean · Market price 1.33
The read
Swan is the higher-ranked seed in clearly stronger hard-court form and arrives fresher, while Steiner has had a heavier three-day workload.
- Swan is WTA No. 208 and ninth seed; Steiner is No. 399
- Swan is 4-1 on hard in this window, 64 games won to 36 lost, and won 6-1 6-0 in the first round
- Swan has won the first set in all five hard-court matches tracked
- Steiner played on 20, 21 and 22 September after two qualifying rounds and a first round
BetBugs · Match WinnerwonKatie SwanEstimated chance72%

Games4 of 5 landed

Signal quality Medium · Uncertainty band Lean · Market price 1.55
The read
Steiner has kept her hard-court matches close on games and needs only to avoid a lopsided defeat against a stronger opponent.
- Steiner's hard-court matches this week were 13-7 and 13-14 in games, a net +5
- Both of her hard-court wins included a set decided by exactly two games
- Swan's average hard-court game margin is about +5.6 per match
- Swan has twice beaten hard-court opponents ranked between 305 and 349 by double-digit game margins
BetBugs · Game HandicaplostValentina Steiner +5.5Estimated chance58%
Signal quality Low · Uncertainty band Lean · Not priced
The read
Second sets have tended to be the quickest part of these players' matches, with Swan's consistently finishing short.
- None of Swan's five tracked second sets reached 10 games
- Swan's second-set average is 7.8 total games
- Swan's straight-sets wins include 6-2 and 6-1 second sets
- Only one of Steiner's two second sets went over 9.5 games
BetBugs · Set 2 Total GameswonUnder 9.5Estimated chance58%
Signal quality Medium · Uncertainty band Slight lean · Not priced
The read
Swan has been winning her hard-court matches by several games, and her biggest margins came against opponents ranked near or below Steiner.
- Swan's hard-court game margin is +28 over five matches (64-36), clearing -3.5 in four of five
- Swan's wins over opponents ranked 305, 343 and 349 came by +4, +10 and +11 games
- Steiner's two hard-court matches give a net +5 games (26-21)
- Swan's single hard-court defeat was a five-game loss to No. 114
BetBugs · Game HandicapwonKatie Swan -3.5Estimated chance57%
Signal quality Low · Uncertainty band Slight lean · Not priced
The read
Opening sets in this window have more often finished below nine-and-a-half games, helped by Swan's quick starts.
- Four of the seven tracked opening sets finished under 9.5 games
- Swan's most recent opening set was 6-1
- Swan's opening sets have kept opponents to 2.8 games on average
- Steiner lost her only 6-0 opening set in qualifying against higher-ranked opposition
BetBugs · Set 1 Total GameswonUnder 9.5Estimated chance54%
Signal quality Medium · Uncertainty band Slight lean · Market price 1.65
The read
Swan's dominant wins have mostly finished quickly, and her straight-sets results are the most common outcome in her recent hard-court sample.
- Swan's hard-court matches average 20 total games (13, 26, 14, 31, 16)
- Steiner's most recent win was a 20-game, straight-sets match
- Swan has dropped three games or fewer in two of her five hard-court matches
- Swan's recent first round lasted 13 games
BetBugs · Total GameswonUnder 21.5Estimated chance53%

Sets4 of 4 landed

Signal quality Medium · Uncertainty band Strong lean · Market price 1.40
The read
Swan has started every hard-court match strongly and outranks Steiner, while Steiner's fast starts came against lower-ranked opponents.
- Swan has won all five tracked hard-court opening sets, averaging 6.2 games to 2.8
- Steiner has won both of her hard-court opening sets, 6-2 and 6-4
- Swan's first round was a 6-1 6-0 win
- Swan has conceded three or fewer games in three opening sets this window
BetBugs · Set 1 WinnerwonKatie SwanEstimated chance71%
Signal quality Medium · Uncertainty band Strong lean · Market price 1.36
The read
Swan owns the stronger second-set record and her most likely result, a straight-sets win, would also decide the second set in her favour.
- Swan has won three of five second sets in tracked hard-court matches
- Swan's second sets average 7.8 total games, nine or fewer in all five
- Swan has three 2-0 wins in her five tracked hard-court matches
- Steiner has won one of two second sets this week
BetBugs · Set 2 WinnerwonKatie SwanEstimated chance69%
Signal quality Medium · Uncertainty band Lean · Not priced
The read
Swan's recent hard-court results have mostly been straight-sets wins, and the ranking and workload gap point to another short match.
- Swan has three straight-sets wins in her five tracked hard-court matches
- Swan's most recent two wins include a 6-1 6-0 and a 12-4 games display
- Steiner's only straight-sets hard-court win came against No. 268
- Swan has won the opening set in every hard-court match this window
BetBugs · Total SetswonUnder 2.5Estimated chance59%
Signal quality Medium · Uncertainty band Near coin-flip · Not priced
The read
Swan has most often won her hard-court matches in straight sets and has not dropped an opening set in this window.
- Swan has three 2-0 wins among five tracked hard-court matches
- Swan has won the opening set in all five of those matches
- Her most recent completed win was 6-1 6-0 over Sahaja Yamalapalli
- Swan's other straight-sets wins were 6-0 6-2 and 6-3 6-1
BetBugs · Set BettingwonKatie Swan 2-0Estimated chance50%

Match stats1 of 1 landed

Signal quality Low · Uncertainty band Strong lean · Not priced
The read
Recent hard-court matches for both players have been settled without tiebreaks, usually by clear margins.
- Six of the seven tracked hard-court matches had no tiebreak
- Swan's five hard-court matches produced one tiebreak in total
- Steiner's two hard-court matches produced none
- Swan's recent 6-1 6-0 win contained no close set
BetBugs · Tiebreak in MatchwonNoEstimated chance78%

Markets to Avoid

High-risk markets where price or context leaves too little cushion.

The 1.33 price requires 75.2%, above our 72.0% estimate.

Previous match context available

Valentina Steiner

12W 3L

6-2 7-5#268Caroline Werner

6-4 1-6 6-4#330Kylie Collins 4-6 1-1 ret.#635Gabriella Da Silva Fick

7-5 6-4#602Marta Lombardini

6-2 6-7(6) 6-3#859Romane Longueville

6-4 6-2#383Jessica Pieri

6-3 6-4#327Gabriela Ce

6-1 6-3#702Federica Sacco

2-6 6-4 6-2#1285Federica Trevisan

6-3 6-4#516Viola Turini

3-6 6-1 6-3#522Josy Daems

6-4 1-6 6-1#279Joelle Steur

6-2 6-4#349Sahaja Yamalapalli

6-1 6-4#457Marie Vogt

6-0 6-3#826Tina Manescu

Katie Swan

10W 5L

6-1 6-0#349Sahaja Yamalapalli

4-0 ret.#255Matilde Jorge

6-4 3-6 6-1#305Malaika Rapolu

6-0 6-2#343Mell Elizabeth Reasco Gonzalez

6-7(5) 6-3 6-3#114Mary Stoiana

6-3 6-1#238Katrina Scott

6-1 6-4#22Madison Keys

6-4 6-4#451Irina-Camelia Begu

6-4 7-6(5)#65Viktorija Golubic

6-1 ret.#71Ashlyn Krueger

7-5 6-2#316Tereza Martincova

7-6(4) 3-2 ret.#102Ajla Tomljanovic

6-4 6-2#94Taylah Preston

7-5 6-1#322Kyoka Okamura

6-1 6-1#259Mei Yamaguchi

Stat Battle

Last 15 match performance, compared side by side.

VSValentina SteinerSteiner

Last 15

3–6

9 core stats · 0 even

Katie SwanSwanKS

Katie Swan carries the stronger recent form — Valentina Steiner's route runs through pressure.

Serve · 1–4

1st Serve In69.9%+4.0pp65.9%

1st Serve Won59.0%+8.9pp67.9%

2nd Serve Won41.4%+5.9pp47.3%

Aces / Match0.3+2.62.9

Double Faults / Match3.81.0 fewer2.8

Return · 1–0

Return Pts Won50.3%+3.6pp46.7%

Pressure · 1–1

Break Pts Converted49.7%+4.1pp45.6%

Break Pts Saved54.0%+5.5pp59.5%

Points · 0–1

Total Pts Won52.0%+1.3pp53.3%

Serve · 1–4

69.9%1st Serve In+4.0pp65.9%

59.0%1st Serve Won+8.9pp67.9%

41.4%2nd Serve Won+5.9pp47.3%

0.3Aces / Match+2.62.9

3.8Double Faults / Match1.0 fewer2.8

Return · 1–0

50.3%Return Pts Won+3.6pp46.7%

Pressure · 1–1

49.7%Break Pts Converted+4.1pp45.6%

54.0%Break Pts Saved+5.5pp59.5%

Points · 0–1

52.0%Total Pts Won+1.3pp53.3%

Valentina Steiner #401Germany0Katie Swan #187United Kingdom2

Player Profiles

Valentina Steiner

Katie Swan

Quick Take

Context

BetBugs edges

Over 2.5

Valentina Steiner 2-1

Katie Swan

Katie Swan

Katie Swan

Valentina Steiner +5.5

Under 21.5

BetBugs probabilities

Result1 of 1 landed

Games4 of 5 landed

Sets4 of 4 landed

Match stats1 of 1 landed

Markets to Avoid

Katie Swan

Valentina Steiner

Valentina Steiner

Katie Swan

Stat Battle